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https://www.readbyqxmd.com/read/28088304/mechanical-biomarkers-of-medial-compartment-knee-osteoarthritis-diagnosis-and-severity-grading-discovery-phase
#1
Neila Mezghani, Youssef Ouakrim, Alexandre Fuentes, Amar Mitiche, Nicola Hagemeister, Pascal-André Vendittoli, Jacques A de Guise
OBJECTIVE: To investigate, as a discovery phase, if 3D knee kinematics assessment parameters can serve as mechanical biomarkers, more specifically as diagnostic biomarker and burden of disease biomarkers, as defined in the Burden of Disease, Investigative, Prognostic, Efficacy of Intervention and Diagnostic classification scheme for osteoarthritis (OA) (Altman et al., 1986). These biomarkers consist of a set of biomechanical parameters discerned from 3D knee kinematic patterns, namely, flexion/extension, abduction/adduction, and tibial internal/external rotation measurements, during gait recording...
December 29, 2016: Journal of Biomechanics
https://www.readbyqxmd.com/read/28088152/theoretical-description-of-circular-dichroism-in-photoelectron-angular-distributions-of-randomly-oriented-chiral-molecules-after-multi-photon-photoionization
#2
R E Goetz, T A Isaev, B Nikoobakht, R Berger, C P Koch
Photoelectron circular dichroism refers to the forward/backward asymmetry in the photoelectron angular distribution with respect to the propagation axis of circularly polarized light. It has recently been demonstrated in femtosecond multi-photon photoionization experiments with randomly oriented camphor and fenchone molecules [C. Lux et al., Angew. Chem., Int. Ed. 51, 4755 (2012) and C. S. Lehmann et al., J. Chem. Phys. 139, 234307 (2013)]. A theoretical framework describing this process as (2+1) resonantly enhanced multi-photon ionization is constructed, which consists of two-photon photoselection from randomly oriented molecules and successive one-photon ionization of the photoselected molecules...
January 14, 2017: Journal of Chemical Physics
https://www.readbyqxmd.com/read/28088140/ring-polymer-molecular-dynamics-studies-on-the-rate-coefficient-of-the-abstraction-channel-of-hydrogen-plus-ethane-propane-and-dimethyl-ether
#3
Qingyong Meng, Jun Chen
To accurately compute the rates of the abstraction channels of hydrogen plus ethane (Et), propane (Pr), and dimethyl ether (DME), ring-polymer molecular dynamics (RPMD) method is used in conjunction with the recently constructed local permutation invariant polynomial neural-networks potential energy surface of the parent H + CH4 system [Q. Meng et al., J. Chem. Phys. 144, 154312 (2016)]. For H + Et, one of the H atoms in CH4 of the parent system is replaced by a methyl group, while for the H + DME reaction, it is replaced by the methoxyl group...
January 14, 2017: Journal of Chemical Physics
https://www.readbyqxmd.com/read/28088139/long-range-interactions-from-the-many-pair-expansion-a-different-avenue-to-dispersion-in-dft
#4
Piotr de Silva, Tianyu Zhu, Troy Van Voorhis
One of the several problems that plague majority of density functional theory calculations is their inability to properly account for long-range correlations giving rise to dispersion forces. The recently proposed many-pair expansion (MPE) [T. Zhu et al., Phys. Rev. B 93, 201108(R) (2016)] is a hierarchy of approximations that systematically corrects any deficiencies of an approximate functional to finally converge to the exact energy. This is achieved by decomposing the total density into a sum of two-electron densities and accounting for successive two-, four-, six-,… electron interactions...
January 14, 2017: Journal of Chemical Physics
https://www.readbyqxmd.com/read/28088134/dirac-bubble-potential-for-he-he-and-inadequacies-in-the-continuum-comparing-an-analytic-model-with-elastic-collision-experiments
#5
Michael Chrysos
We focus on the long-pending issue of the inadequacy of the Dirac bubble potential model in the description of He-He interactions in the continuum [L. L. Lohr and S. M. Blinder, Int. J. Quantum Chem. 53, 413 (1995)]. We attribute this failure to the lack of a potential wall to mimic the onset of the repulsive interaction at close range separations. This observation offers the explanation to why this excessively simple model proves incapable of quantitatively reproducing previous experimental findings of glory scattering in He-He, although being notorious for its capability of reproducing several distinctive features of the atomic and isotopic helium dimers and trimers [L...
January 14, 2017: Journal of Chemical Physics
https://www.readbyqxmd.com/read/28088066/activity-dependent-development-of-visual-receptive-fields
#6
REVIEW
Andrew Thompson, Alexandra Gribizis, Chinfei Chen, Michael C Crair
It is widely appreciated that neuronal activity contributes to the development of brain representations of the external world. In the visual system, in particular, it is well known that activity cooperates with molecular cues to establish the topographic organization of visual maps on a macroscopic scale [1,2] (Huberman et al., 2008; Cang and Feldheim, 2013), mapping axons in a retinotopic and eye-specific manner. In recent years, significant progress has been made in elucidating the role of activity in driving the finer-scale circuit refinement that shapes the receptive fields of individual cells...
January 11, 2017: Current Opinion in Neurobiology
https://www.readbyqxmd.com/read/28088040/listen-up-developmental-differences-in-the-impact-of-ids-on-speech-segmentation
#7
Melanie S Schreiner, Nivedita Mani
While American English infants typically segment words from fluent speech by 7.5-months, studies of infants from other language backgrounds have difficulty replicating this finding. One possible explanation for this cross-linguistic difference is that the input infants from different language backgrounds receive is not as infant-directed as American English infant-directed speech (Floccia et al., 2016). Against this background, the current study investigates whether German 7.5- and 9-month-old infants segment words from fluent speech when the input is prosodically similar to American English IDS...
January 11, 2017: Cognition
https://www.readbyqxmd.com/read/28088037/assessment-of-the-meat-quality-of-lamb-m-longissimus-thoracis-et-lumborum-and-m-triceps-brachii-following-three-different-halal-slaughter-procedures
#8
A S Danso, R I Richardson, R Khalid
A total of fifteen male and fifteen female lambs were allocated to three groups of ten animals and subjected to: traditional Halal slaughter without stunning (TNS); slaughter following electric head-only stunning (EHOS) or; post-cut electric head-only stun (PCEHOS) and their meat quality was determined. Instrumental and sensory analyses were carried out on two muscles; M. longissimus thoracis et lumborum (LTL) and M. triceps brachii (TB). Additionally, the effects of sex and muscle type were also assessed. No differences were found among slaughter methods for pH, drip loss and shear force...
January 4, 2017: Meat Science
https://www.readbyqxmd.com/read/28088032/oral-cannabidiol-does-not-produce-a-signal-for-abuse-liability-in-frequent-marijuana-smokers
#9
Shanna Babalonis, Margaret Haney, Robert J Malcolm, Michelle R Lofwall, Victoria R Votaw, Steven Sparenborg, Sharon L Walsh
BACKGROUND: Cannabidiol (CBD) is a naturally occurring constituent of the marijuana plant. In the past few years, there has been great interest in the therapeutic effects of isolated CBD and it is currently being explored for numerous disease conditions (e.g., pain, epilepsy, cancer, various drug dependencies). However, CBD remains a Schedule I drug on the U.S. Controlled Substances Act (CSA). Despite its status, there are no well-controlled data available regarding its abuse liability...
December 14, 2016: Drug and Alcohol Dependence
https://www.readbyqxmd.com/read/28088013/delineating-hierarchy-of-selenotranscriptome-expression-and-their-response-to-selenium-status-in-chicken-central-nervous-system
#10
Xiu-Qing Jiang, Chang-Yu Cao, Zhao-Yang Li, Wei Li, Cong Zhang, Jia Lin, Xue-Nan Li, Jing-Long Li
Selenium (Se) incorporated in selenoproteins as selenocysteine and supports various important cellular and organismal functions. We recently reported that chicken brain exhibited high priority for Se supply and retention under conditions of dietary Se deficiency and supernutrition Li et al. (2012) . However, the selenotranscriptome expressions and their response to Se status in chicken central nervous system (CNS) are unclear. To better understand the relationship of Se homeostasis and selenoproteins expression in chicken CNS, 1day-old HyLine White chickens were fed a low Se diet (Se-L, 0...
January 4, 2017: Journal of Inorganic Biochemistry
https://www.readbyqxmd.com/read/28087936/fungal-ligninolytic-enzymes-and-their-applications
#11
Miia R Mäkelä, Erin L Bredeweg, Jon K Magnuson, Scott E Baker, Ronald P de Vries, Kristiina Hildén
The global push toward an efficient and economical biobased economy has driven research to develop more cost-effective applications for the entirety of plant biomass, including lignocellulosic crops. As discussed elsewhere (Karlsson M, Atanasova L, Funck Jensen D, Zeilinger S, in Heitman J et al. [ed], Tuberculosis and the Tubercle Bacillus, 2nd ed, in press), significant progress has been made in the use of polysaccharide fractions from lignocellulose, cellulose, and various hemicellulose types. However, developing processes for use of the lignin fraction has been more challenging...
December 2016: Microbiology Spectrum
https://www.readbyqxmd.com/read/28087710/targeting-argonaute-to-chromatin
#12
Jered M Wendte, Craig S Pikaard
In many eukaryotes, siRNAs bound to Argonaute proteins guide chromatin-modifying enzymes to complementary loci, resulting in transcriptional gene silencing. Multiple lines of evidence indicate that siRNAs base-pair with longer RNAs produced at target loci, but the possibility that siRNAs base-pair directly with DNA remains an attractive hypothesis. In a recent study, Shimada et al. (pp. 2571-2580) conducted experiments that address these alternative hypotheses, yielding additional evidence that fission yeast siRNA-Argonaute silencing complexes are recruited to target loci exclusively via interactions with nascent transcripts...
December 15, 2016: Genes & Development
https://www.readbyqxmd.com/read/28087512/giorgis-allemand-et-al-respond-to-ambient-environment-and-preterm-birth
#13
Lise Giorgis-Allemand, Marie Pedersen, Rob M J Beelen, Ulrike Gehring, Gerard Hoek, Xavier Basagana, Mark Nieuwenhuijsen, Bert Brunekreef, Manolis Kogevinas, Rémy Slama
No abstract text is available yet for this article.
January 13, 2017: American Journal of Epidemiology
https://www.readbyqxmd.com/read/28087511/invited-commentary-ambient-environment-and-the-risk-of-preterm-birth
#14
Sandie Ha, Pauline Mendola
Preterm birth is a common adverse birth outcome known to be associated with increased infant mortality, and it often results in a higher burden of offspring morbidity in both the short and long terms. The potential for environmental factors, particularly air pollution and meteorological parameters, to increase preterm birth risk has received significant attention worldwide, but the findings are generally inconsistent, with variations in study designs and methods across populations and geographic locations. In the current issue of the Journal, Giorgis-Allemand et al...
January 13, 2017: American Journal of Epidemiology
https://www.readbyqxmd.com/read/28087390/family-building-after-breast-cancer-considering-the-effect-on-adherence-to-adjuvant-endocrine-therapy
#15
Catherine Benedict, Bridgette Thom, Eleonora Teplinsky, Jane Carleton, Joanne F Kelvin
Adherence to endocrine therapy (ET) is a longstanding problem in breast cancer (BC) survivorship care, particularly among younger women. Younger patients have reported lower ET initiation rates and greater rates of early discontinuation and are considered an "at risk" group for nonadherence. For women who hope to have children in the future, concerns about premature menopause and the implications of postponing childbearing for the 5 to 10 years of ET are widespread. Preliminary evidence suggests that prioritizing fertility, along with concerns about side effects, leads to ET noninitiation and early discontinuation...
December 24, 2016: Clinical Breast Cancer
https://www.readbyqxmd.com/read/28087172/endothelial-function-impairment-in-stemi-patients-with-out-of-hospital-cardiac-arrest-under-therapeutic-hypothermia-treatment
#16
Salvatore Brugaletta, Giancarla Scalone, Ana Paula Dantas, Luis Ortega-Paz, Manel Garabito, Mercè Roqué, Victoria Martin, Monica Masotti, Xavier Freixa, Manel Sabaté
BACKGROUND: Therapeutic hypothermia (HT) in out-of-hospital cardiac arrest STEMI patients aims to improve their neurological prognosis, but it has been associated with slow coronary flow and cardiac thrombotic events. We sought to serially assess endothelial function during the first 48h after admission in out-of-hospital cardiac arrest STEMI patients, under therapeutic hypothermia (HT). METHODS: From January 2015 to August 2015, eighteen consecutive out-of-hospital cardiac arrest STEMI patients eligible for primary PCI received HT at admission and were included in the study (HT group)...
January 6, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28087009/improving-kidney-disease-in-obese-adolescents-a-surgical-approach
#17
Ian R Macumber
Obesity has been associated with chronic kidney disease in adult studies, but little data exist in pediatrics. Nehus et al. offer the first study to show that bariatric surgery in severely obese adolescents is associated with improved renal outcomes. Despite limitations, this study provided compelling evidence that aggressive weight loss intervention can improve renal outcomes in young, severely obese subjects. Further investigation is required to determine mechanisms by which this may occur.
February 2017: Kidney International
https://www.readbyqxmd.com/read/28087006/new-insights-into-the-pathogenesis-and-treatment-of-heavy-chain-deposition-disease
#18
Jonathan J Hogan, Glen S Markowitz
Heavy chain deposition disease is defined by the presence of tissue deposits of truncated monoclonal Ig heavy chains, usually associated with an underlying plasma cell clone. In this issue of Kidney International, Bridoux et al. described the clinical, histologic, and molecular characterization of 15 patients with heavy chain deposition disease, which is the largest case series to date. Notable findings included the frequent presence of C3 deposits and hypocomplementemia, the uniform finding of truncated heavy chains with the deletion in the heavy chain constant region 1, and the common occurrence of an abnormal serum-free κ:λ ratio, despite the absence of light-chain tissue deposition...
February 2017: Kidney International
https://www.readbyqxmd.com/read/28081463/analysis-of-the-results-of-recurrent-intracranial-meningiomas-treated-with-re-radiosurgery
#19
Moinay Kim, Do Hee Lee, Hyun Jung Kim Rn, Young Hyun Cho, Jeong Hoon Kim, Do Hoon Kwon
OBJECTS: Meningioma is the most common intracranial neoplasm, comprising approximately 30% of all primary intracranial tumors (Claus et al., 2005) [1]. Treatment options include observation, microsurgical resection, stereotactic radiosurgery (SRS), and whole brain radiation therapy (WBRT). Gamma knife radiosurgery (GKRS) is a very effective treatment for intracranial meningiomas; previous studies showed the tumor control rate at 5-10 years of follow-up as 84.3%-100% in all cases (Feigl et al...
December 29, 2016: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/28081451/how-specialized-are-writing-specific-brain-regions-an-fmri-study-of-writing-drawing-and-oral-spelling
#20
Samuel Planton, Marieke Longcamp, Patrice Péran, Jean-François Démonet, Mélanie Jucla
Several brain imaging studies identified brain regions that are consistently involved in writing tasks; the left premotor and superior parietal cortices have been associated with the peripheral components of writing performance as opposed to other regions that support the central, orthographic components. Based on a meta-analysis by Planton, Jucla, Roux, and Demonet (2013), we focused on five such writing areas and questioned the task-specificity and hemispheric lateralization profile of the brain response in an functional magnetic resonance imaging (fMRI) experiment where 16 right-handed participants wrote down, spelled out orally object names, and drew shapes from object pictures...
December 18, 2016: Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
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